O11.4 is the authoritative medical code for Pre-existing hypertension with pre-eclampsia, complicating childbirth. This classification is used in medical billing and clinical recording to specify the clinical criteria for pre-existing hypertension with pre-eclampsia, complicating childbirth (ICD-10-CM O11.4), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Pre-existing hypertension with pre-eclampsia, complicating childbirth is a billable ICD-10-CM diagnosis code O11.4. Includes: conditions in O10 complicated by pre-eclampsia; pre-eclampsia superimposed pre-existing hypertension. Use additional code: code from O10 to identify the type of hypertension.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for O11.4 in the official ICD-10-CM tabular list.
Includes
Conditions the official ICD-10-CM tabular list includes under this code.
- conditions in O10 complicated by pre-eclampsia
- pre-eclampsia superimposed pre-existing hypertension
Use Additional Code
Supplementary codes the tabular list directs you to add.
- code from O10 to identify the type of hypertension
Frequently Asked Questions (FAQ) & Clinical Guidance
Is an additional code needed with O11.4?
Use additional code(s) to specify: code from O10 to identify the type of hypertension.
Codes in This Family (6)
Official ICD-10-CM classifications in the same code family as O11.4, with their registry titles.
- O11 — Pre-existing hypertension with pre-eclampsia
- O11.1 — Pre-existing hypertension with pre-eclampsia, first trimester
- O11.2 — Pre-existing hypertension with pre-eclampsia, second trimester
- O11.3 — Pre-existing hypertension with pre-eclampsia, third trimester
- O11.5 — Pre-existing hypertension with pre-eclampsia, complicating the puerperium
- O11.9 — Pre-existing hypertension with pre-eclampsia, unspecified trimester
Indexed Clinical Terms (1)
Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.
- Hypertension, hypertensive (accelerated) (benign) (essential) (idiopathic) (malignant) (systemic), complicating, childbirth (labor), pre-existing, with, pre-eclampsia
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures:
ICD Code O07.4
Failed attempted termination of pregnancy without complication
ICD Code O10.4
Pre-existing secondary hypertension complicating pregnancy, childbirth and the puerperium
ICD Code O13.4
Gestational [pregnancy-induced] hypertension without significant proteinuria, complicating childbirth
ICD Code O16.4
Unspecified maternal hypertension, complicating childbirth